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handlers.js
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handlers.js
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var nowUtil = require('./nowUtil').nowUtil;
exports.initialize = function (nowjs) {
function multicall(group, fqn, args) {
var user, func;
for (var i = 0, k = Object.keys(group.users), l = k.length; i < l; i++) {
user = group.users[k[i]];
if (group.excludes[user.user.clientId]) {
continue;
}
func = user.get(fqn);
user = nowUtil.clone(user, {fqn: fqn});
// Call the function with group.now and group.user
if (typeof func === 'function') {
func.apply(user, args);
} else {
// err
}
}
}
function replaceVar(group, fqn, val) {
var exclusive = false;
for (var j in group.excludes) {
if (group.excludes[j]) {
exclusive = true;
break;
}
}
var users = Object.keys(group.users);
var i = 0, ll = users.length;
var toSend = {},
flattenedVal = {},
fqns,
user;
// Setup: generate flattenedVal and toSend.
if (val && typeof val === 'object') {
flattenedVal = nowUtil.flatten(val, fqn);
fqns = Object.keys(flattenedVal);
// Iterate through all leaves.
for (i = 0, ll = fqns.length; i < ll; i++) {
toSend[fqns[i]] = nowUtil.getValOrFqn(flattenedVal[fqns[i]], fqns[i]);
}
} else {
// val is not an object.
fqns = [fqn];
toSend[fqn] = nowUtil.getValOrFqn(val, fqn);
flattenedVal[fqn] = val;
}
var ff = fqns.length, k;
if (exclusive) {
for (i = 0, ll = users.length; i < ll; i++) {
user = group.users[users[i]];
if (group.excludes[user.user.clientId]) {
continue;
}
// Clear the user's scopeTable entry before setting the new
// value.
user.deleteVar(fqn);
user.socket.emit('rv', toSend);
if (ff === 0) {
group.scopeTable.set(fqn, []);
}
for (k = 0; k < ff; k++) {
// Set values for individual users.
user.scopeTable.set(fqns[k], flattenedVal[fqns[k]]);
}
}
return;
} else {
// Not an exclusive group.
group.deleteVar(fqn);
for (k = 0; k < ff; k++) {
// Set values for the group.
group.scopeTable.set(fqns[k], flattenedVal[fqns[k]]);
}
if (ff === 0) {
group.scopeTable.set(fqn, []);
toSend[fqn] = {};
}
// Invalidate the value in the group's users' scopeTables
for (i = 0, ll = users.length; i < ll; i++) {
user = group.users[users[i]];
user.scopeTable.deleteVar(fqn);
user.socket.emit('rv', toSend);
}
}
// If e is `everyone`, invalidate the values in the lesser groups
if (group.isSuperGroup) {
var groups = Object.keys(nowjs.groups);
if (groups[0] === 'everyone') {
for (i = 1, ll = groups.length; i < ll; i++) {
// everyone is guaranteed to be the first group in keys.
group = nowjs.groups[groups[i]];
group.scopeTable.deleteVar(fqn);
}
} else {
// stupid people, using numbers as group names...
for (i = 0, ll = groups.length; i < ll; i++) {
if (groups[i] !== 'everyone') {
group = nowjs.groups[groups[i]];
group.scopeTable.deleteVar(fqn);
}
}
}
}
}
function deleteVar(group, fqn) {
var keys = Object.keys(group.users);
var user;
for (var i = 0, ll = keys.length; i < ll; i++) {
user = group.users[keys[i]];
// Only send to users who haven't overwritten the value at the
// provided fqn.
if (user.scopeTable[fqn] === undefined) {
user.socket.emit('del', fqn);
}
}
group.scopeTable.deleteVar(fqn);
}
nowjs.on('multicall', function (e, args) {
multicall(e, e.fqn, args);
});
nowjs.on('grouprv', function (e) {
replaceVar(e, e.fqn, e.val);
});
nowjs.on('groupdel', function (e) {
deleteVar(e, e.fqn);
});
nowjs.on('removegroup', function (name) {
if (nowUtil.hasProperty(this.groups, name)) {
var self = this;
// Get the actual group
group = this.getGroup(name);
group.getUsers(function(users){
users.map(function(user){
group.removeUser(user);
});
});
// Finally, delete the group itself.
delete this.groups[name];
}
});
};